Leases and Commitments Supplemental Cash Flow Information (Details) $ in Thousands	6 Months Ended
	Jun. 30, 2019 USD ($)
Leases [Abstract]
Operating Leases, Cash Paid in Measurement of Amounts for Lease Liabilities	$ 6,688
Financing Leases, Cash Paid in Measurement of Amounts for Lease Liabilities	1,747
Total Cash Paid in Measurement of Amounts for Lease Liabilities	8,435
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability	407
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability	293
Right-of-Use Asset Obtained in Exchange for Total Lease Liability	$ 700